Pileus Git - ~andy/gtk/blob - gtk/gtkcheckbutton.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include <config.h>
  28 #include "gtkalias.h"
  29 #include "gtkcheckbutton.h"
  30 #include "gtkintl.h"
  31 #include "gtklabel.h"
  32
  33
  34 #define INDICATOR_SIZE     13
  35 #define INDICATOR_SPACING  2
  36
  37
  38 static void gtk_check_button_class_init          (GtkCheckButtonClass *klass);
  39 static void gtk_check_button_init                (GtkCheckButton      *check_button);
  40 static void gtk_check_button_size_request        (GtkWidget           *widget,
  41                                                   GtkRequisition      *requisition);
  42 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  43                                                   GtkAllocation       *allocation);
  44 static gint gtk_check_button_expose              (GtkWidget           *widget,
  45                                                   GdkEventExpose      *event);
  46 static void gtk_check_button_paint               (GtkWidget           *widget,
  47                                                   GdkRectangle        *area);
  48 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  49                                                   GdkRectangle        *area);
  50 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  51                                                   GdkRectangle        *area);
  52
  53 static GtkToggleButtonClass *parent_class = NULL;
  54
  55
  56 GType
  57 gtk_check_button_get_type (void)
  58 {
  59   static GType check_button_type = 0;
  60
  61   if (!check_button_type)
  62     {
  63       static const GTypeInfo check_button_info =
  64       {
  65         sizeof (GtkCheckButtonClass),
  66         NULL,           /* base_init */
  67         NULL,           /* base_finalize */
  68         (GClassInitFunc) gtk_check_button_class_init,
  69         NULL,           /* class_finalize */
  70         NULL,           /* class_data */
  71         sizeof (GtkCheckButton),
  72         0,              /* n_preallocs */
  73         (GInstanceInitFunc) gtk_check_button_init,
  74       };
  75
  76       check_button_type =
  77         g_type_register_static (GTK_TYPE_TOGGLE_BUTTON, "GtkCheckButton",
  78                                 &check_button_info, 0);
  79     }
  80
  81   return check_button_type;
  82 }
  83
  84 static void
  85 gtk_check_button_class_init (GtkCheckButtonClass *class)
  86 {
  87   GtkWidgetClass *widget_class;
  88
  89   widget_class = (GtkWidgetClass*) class;
  90   parent_class = g_type_class_peek_parent (class);
  91
  92   widget_class->size_request = gtk_check_button_size_request;
  93   widget_class->size_allocate = gtk_check_button_size_allocate;
  94   widget_class->expose_event = gtk_check_button_expose;
  95
  96   class->draw_indicator = gtk_real_check_button_draw_indicator;
  97
  98   gtk_widget_class_install_style_property (widget_class,
  99                                            g_param_spec_int ("indicator_size",
 100                                                              P_("Indicator Size"),
 101                                                              P_("Size of check or radio indicator"),
 102                                                              0,
 103                                                              G_MAXINT,
 104                                                              INDICATOR_SIZE,
 105                                                              G_PARAM_READABLE));
 106   gtk_widget_class_install_style_property (widget_class,
 107                                            g_param_spec_int ("indicator_spacing",
 108                                                              P_("Indicator Spacing"),
 109                                                              P_("Spacing around check or radio indicator"),
 110                                                              0,
 111                                                              G_MAXINT,
 112                                                              INDICATOR_SPACING,
 113                                                              G_PARAM_READABLE));
 114 }
 115
 116 static void
 117 gtk_check_button_init (GtkCheckButton *check_button)
 118 {
 119   GTK_WIDGET_SET_FLAGS (check_button, GTK_NO_WINDOW);
 120   GTK_WIDGET_UNSET_FLAGS (check_button, GTK_RECEIVES_DEFAULT);
 121   GTK_TOGGLE_BUTTON (check_button)->draw_indicator = TRUE;
 122   GTK_BUTTON (check_button)->depress_on_activate = FALSE;
 123 }
 124
 125 GtkWidget*
 126 gtk_check_button_new (void)
 127 {
 128   return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
 129 }
 130
 131
 132 GtkWidget*
 133 gtk_check_button_new_with_label (const gchar *label)
 134 {
 135   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 136 }
 137
 138 /**
 139  * gtk_check_button_new_with_mnemonic:
 140  * @label: The text of the button, with an underscore in front of the
 141  *         mnemonic character
 142  * @returns: a new #GtkCheckButton
 143  *
 144  * Creates a new #GtkCheckButton containing a label. The label
 145  * will be created using gtk_label_new_with_mnemonic(), so underscores
 146  * in @label indicate the mnemonic for the check button.
 147  **/
 148 GtkWidget*
 149 gtk_check_button_new_with_mnemonic (const gchar *label)
 150 {
 151   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, "use_underline", TRUE, NULL);
 152 }
 153
 154
 155 /* This should only be called when toggle_button->draw_indicator
 156  * is true.
 157  */
 158 static void
 159 gtk_check_button_paint (GtkWidget    *widget,
 160                         GdkRectangle *area)
 161 {
 162   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 163
 164   if (GTK_WIDGET_DRAWABLE (widget))
 165     {
 166       gint border_width;
 167       gint interior_focus;
 168       gint focus_width;
 169       gint focus_pad;
 170
 171       gtk_widget_style_get (widget,
 172                             "interior-focus", &interior_focus,
 173                             "focus-line-width", &focus_width,
 174                             "focus-padding", &focus_pad,
 175                             NULL);
 176
 177       gtk_check_button_draw_indicator (check_button, area);
 178
 179       border_width = GTK_CONTAINER (widget)->border_width;
 180       if (GTK_WIDGET_HAS_FOCUS (widget))
 181         {
 182           GtkWidget *child = GTK_BIN (widget)->child;
 183
 184           if (interior_focus && child && GTK_WIDGET_VISIBLE (child))
 185             gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 186                              NULL, widget, "checkbutton",
 187                              child->allocation.x - focus_width - focus_pad,
 188                              child->allocation.y - focus_width - focus_pad,
 189                              child->allocation.width + 2 * (focus_width + focus_pad),
 190                              child->allocation.height + 2 * (focus_width + focus_pad));
 191           else
 192             gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 193                              NULL, widget, "checkbutton",
 194                              border_width + widget->allocation.x,
 195                              border_width + widget->allocation.y,
 196                              widget->allocation.width - 2 * border_width,
 197                              widget->allocation.height - 2 * border_width);
 198         }
 199     }
 200 }
 201
 202 void
 203 _gtk_check_button_get_props (GtkCheckButton *check_button,
 204                              gint           *indicator_size,
 205                              gint           *indicator_spacing)
 206 {
 207   GtkWidget *widget =  GTK_WIDGET (check_button);
 208
 209   if (indicator_size)
 210     gtk_widget_style_get (widget, "indicator_size", indicator_size, NULL);
 211
 212   if (indicator_spacing)
 213     gtk_widget_style_get (widget, "indicator_spacing", indicator_spacing, NULL);
 214 }
 215
 216 static void
 217 gtk_check_button_size_request (GtkWidget      *widget,
 218                                GtkRequisition *requisition)
 219 {
 220   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 221
 222   if (toggle_button->draw_indicator)
 223     {
 224       GtkWidget *child;
 225       gint temp;
 226       gint indicator_size;
 227       gint indicator_spacing;
 228       gint border_width = GTK_CONTAINER (widget)->border_width;
 229       gint focus_width;
 230       gint focus_pad;
 231
 232       gtk_widget_style_get (GTK_WIDGET (widget),
 233                             "focus-line-width", &focus_width,
 234                             "focus-padding", &focus_pad,
 235                             NULL);
 236
 237       requisition->width = border_width * 2;
 238       requisition->height = border_width * 2;
 239
 240       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 241                                    &indicator_size, &indicator_spacing);
 242
 243       child = GTK_BIN (widget)->child;
 244       if (child && GTK_WIDGET_VISIBLE (child))
 245         {
 246           GtkRequisition child_requisition;
 247
 248           gtk_widget_size_request (child, &child_requisition);
 249
 250           requisition->width += child_requisition.width + indicator_spacing;
 251           requisition->height += child_requisition.height;
 252         }
 253
 254       requisition->width += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 255
 256       temp = indicator_size + indicator_spacing * 2;
 257       requisition->height = MAX (requisition->height, temp) + 2 * (focus_width + focus_pad);
 258     }
 259   else
 260     (* GTK_WIDGET_CLASS (parent_class)->size_request) (widget, requisition);
 261 }
 262
 263 static void
 264 gtk_check_button_size_allocate (GtkWidget     *widget,
 265                                 GtkAllocation *allocation)
 266 {
 267   GtkCheckButton *check_button;
 268   GtkToggleButton *toggle_button;
 269   GtkButton *button;
 270   GtkAllocation child_allocation;
 271
 272   button = GTK_BUTTON (widget);
 273   check_button = GTK_CHECK_BUTTON (widget);
 274   toggle_button = GTK_TOGGLE_BUTTON (widget);
 275
 276   if (toggle_button->draw_indicator)
 277     {
 278       gint indicator_size;
 279       gint indicator_spacing;
 280       gint focus_width;
 281       gint focus_pad;
 282
 283       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 284       gtk_widget_style_get (widget,
 285                             "focus-line-width", &focus_width,
 286                             "focus-padding", &focus_pad,
 287                             NULL);
 288
 289       widget->allocation = *allocation;
 290       if (GTK_WIDGET_REALIZED (widget))
 291         gdk_window_move_resize (button->event_window,
 292                                 allocation->x, allocation->y,
 293                                 allocation->width, allocation->height);
 294
 295       if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
 296         {
 297           GtkRequisition child_requisition;
 298           gint border_width = GTK_CONTAINER (widget)->border_width;
 299
 300           gtk_widget_get_child_requisition (GTK_BIN (button)->child, &child_requisition);
 301
 302           child_allocation.width = MIN (child_requisition.width,
 303                                         allocation->width -
 304                                         ((border_width + focus_width + focus_pad) * 2
 305                                          + indicator_size + indicator_spacing * 3));
 306           child_allocation.width = MAX (child_allocation.width, 1);
 307
 308           child_allocation.height = MIN (child_requisition.height,
 309                                          allocation->height - (border_width + focus_width + focus_pad) * 2);
 310           child_allocation.height = MAX (child_allocation.height, 1);
 311
 312           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
 313                                 widget->allocation.x + focus_width + focus_pad);
 314           child_allocation.y = widget->allocation.y +
 315                   (allocation->height - child_allocation.height) / 2;
 316
 317           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 318             child_allocation.x = allocation->x + allocation->width
 319               - (child_allocation.x - allocation->x + child_allocation.width);
 320
 321           gtk_widget_size_allocate (GTK_BIN (button)->child, &child_allocation);
 322         }
 323     }
 324   else
 325     (* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
 326 }
 327
 328 static gint
 329 gtk_check_button_expose (GtkWidget      *widget,
 330                          GdkEventExpose *event)
 331 {
 332   GtkCheckButton *check_button;
 333   GtkToggleButton *toggle_button;
 334   GtkBin *bin;
 335
 336   check_button = GTK_CHECK_BUTTON (widget);
 337   toggle_button = GTK_TOGGLE_BUTTON (widget);
 338   bin = GTK_BIN (widget);
 339
 340   if (GTK_WIDGET_DRAWABLE (widget))
 341     {
 342       if (toggle_button->draw_indicator)
 343         {
 344           gtk_check_button_paint (widget, &event->area);
 345
 346           if (bin->child)
 347             gtk_container_propagate_expose (GTK_CONTAINER (widget),
 348                                             bin->child,
 349                                             event);
 350         }
 351       else if (GTK_WIDGET_CLASS (parent_class)->expose_event)
 352         (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 353     }
 354
 355   return FALSE;
 356 }
 357
 358
 359 static void
 360 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 361                                  GdkRectangle   *area)
 362 {
 363   GtkCheckButtonClass *class;
 364
 365   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 366
 367   class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 368
 369   if (class->draw_indicator)
 370     (* class->draw_indicator) (check_button, area);
 371 }
 372
 373 static void
 374 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 375                                       GdkRectangle   *area)
 376 {
 377   GtkWidget *widget;
 378   GtkWidget *child;
 379   GtkButton *button;
 380   GtkToggleButton *toggle_button;
 381   GtkStateType state_type;
 382   GtkShadowType shadow_type;
 383   gint x, y;
 384   gint indicator_size;
 385   gint indicator_spacing;
 386   gint focus_width;
 387   gint focus_pad;
 388   gboolean interior_focus;
 389
 390   if (GTK_WIDGET_DRAWABLE (check_button))
 391     {
 392       widget = GTK_WIDGET (check_button);
 393       button = GTK_BUTTON (check_button);
 394       toggle_button = GTK_TOGGLE_BUTTON (check_button);
 395
 396       gtk_widget_style_get (widget, "interior_focus", &interior_focus,
 397                             "focus-line-width", &focus_width,
 398                             "focus-padding", &focus_pad, NULL);
 399
 400       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 401
 402       x = widget->allocation.x + indicator_spacing + GTK_CONTAINER (widget)->border_width;
 403       y = widget->allocation.y + (widget->allocation.height - indicator_size) / 2;
 404
 405       child = GTK_BIN (check_button)->child;
 406       if (!interior_focus || !(child && GTK_WIDGET_VISIBLE (child)))
 407         x += focus_width + focus_pad;
 408
 409       if (toggle_button->inconsistent)
 410         shadow_type = GTK_SHADOW_ETCHED_IN;
 411       else if (toggle_button->active)
 412         shadow_type = GTK_SHADOW_IN;
 413       else
 414         shadow_type = GTK_SHADOW_OUT;
 415
 416       if (button->activate_timeout || (button->button_down && button->in_button))
 417         state_type = GTK_STATE_ACTIVE;
 418       else if (button->in_button)
 419         state_type = GTK_STATE_PRELIGHT;
 420       else if (!GTK_WIDGET_IS_SENSITIVE (widget))
 421         state_type = GTK_STATE_INSENSITIVE;
 422       else
 423         state_type = GTK_STATE_NORMAL;
 424
 425       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 426         x = widget->allocation.x + widget->allocation.width - (indicator_size + x - widget->allocation.x);
 427
 428       if (GTK_WIDGET_STATE (toggle_button) == GTK_STATE_PRELIGHT)
 429         {
 430           GdkRectangle restrict_area;
 431           GdkRectangle new_area;
 432
 433           restrict_area.x = widget->allocation.x + GTK_CONTAINER (widget)->border_width;
 434           restrict_area.y = widget->allocation.y + GTK_CONTAINER (widget)->border_width;
 435           restrict_area.width = widget->allocation.width - (2 * GTK_CONTAINER (widget)->border_width);
 436           restrict_area.height = widget->allocation.height - (2 * GTK_CONTAINER (widget)->border_width);
 437
 438           if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 439             {
 440               gtk_paint_flat_box (widget->style, widget->window, GTK_STATE_PRELIGHT,
 441                                   GTK_SHADOW_ETCHED_OUT,
 442                                   area, widget, "checkbutton",
 443                                   new_area.x, new_area.y,
 444                                   new_area.width, new_area.height);
 445             }
 446         }
 447
 448       gtk_paint_check (widget->style, widget->window,
 449                        state_type, shadow_type,
 450                        area, widget, "checkbutton",
 451                        x, y, indicator_size, indicator_size);
 452     }
 453 }